look, every day we're using more and more energy. the world needs more energy. where's it going to come from? ♪ ♪ that's why right here in australia, chevron is building one of the biggest natural gas projects in the world. enough power for a city the size of singapore for 50 years. what's it going to do to the planet? natural gas is the cleanest conventional fuel there is. we've got to be smart about this. it's a smart way to go. ♪ ♪ [ kitt ] you know what's impressive? a talking car. but i'll tell you what impresses me. a talking train. this ge locomotive can tell you exactly where it is, what it's carrying, while using less fuel. delivering whatever the world needs, when it needs it. ♪ ♪ after all, what's the point of talking if you don't have something important to say? ♪ ♪ >> schieffer: ronald reagan used to say for all our differences, if we were attacked by aliens from outer space earth's people would come together and defend that planet. all that space junk crashing into siberia made me wonder, though was he right? probably. but after wat